The Col du Tourmalet is one of the legendary climbs of the Pyrenees. With tough ascensions on both the east and west, it is a regular feature of the Tour de France. Indeed the Tour has tackled this pass more times than any other in France. So you’d hope the altitude of the pass is agreed. In case of doubt a giant sign marks the pass.
Only a new jersey by Rapha created to celebrate the legendary climbs of the Pyrenees appears to mention the wrong altitude.